The Law of Moses was not the Manifestation of the Grace of God
Source: TTT
John 1:17
For the law was given through Moses; grace and truth came through Jesus Christ.
Romans 8:3, 4
For what the law was powerless to do in that it was weakened by the flesh, God did by sending His own Son in the likeness of sinful man, as an offering for sin. He thus condemned sin in the flesh, / so that the righteous standard of the law might be fulfilled in us, who do not walk according to the flesh but according to the Spirit.